System of distributing electricity by alternating currents.



No. 832,852. PATENTED OCT. 9, 1906.

W. MAON- FAIRFAX. SYSTEM OF DISTRIBUTING ELECTRICITY BY ALTERNATING GURRENTS.

APPLICATION FILED JULY 18. 1892.

Invenlr;

UNITED STATEQTZXTENT OFFICE.

WlLLlAM MAGN'EILL FAIRFAX, OF BROOKLYN, NEW YORK.

SYSTEM OF DISTRIBUTING ELECTRICITYBY ALTERNATING CURRENTS.

No. 832.852. V Specification of Letters Patent. Pltellted Oct. 9, 1906. Application fllarl July 18, 1882. Serial No. M0378.

, T Ml whom/it y 1 0 TT'are converters or transformers.

Be it known that 1, WILLIAM MACNEILL-i P P arethe primary coils of the transform- FAIRF X, of the-city of Brooklyn, county of ers. i v Kings, and ,State"ofNew 1York,'have'in-' S S are the secondary coils of the trans- "5 vented certainne'w and useful Improvements formers. I

' in Systerrslof Distributing Electricity by 1 1 are incandescent lamps-or other trans- Alternating Currents, of which the following lating devices arranged in multiple arc in the is a specification, reference being had to the, secondary circuits-SS. v accompanying-drawing, forming. part ofthis C C are condensers placed in shunt to the 1; specification. 1 secondary circuit. As shown, connected in 6 My inventionhas for its object the siniplishunt to the secondary circuit are the termification and. improvement of alternatingnals of. the. condenser. These condensers current systems; and my particular obj ect is ma be polariaztion or electrolyticcellsj to arrange transformers in series on "a" coni 1 he action of the ap aratus shown in the 5 stantcur rent alternating system. drawing is as follows: en the load on'the 7o It has hitherto been found impracticable. secondaryis decreased-for instance, when to' arrange convertersin series? when their lamps arranged ,inmultiple arc; are cut' outsecondaries supply translating devices in then the pressure at the terminals of the secondary circu't' tends to. rise. This in-fturn multiple arc, because-in such case the pri- I 'maries require currents of constant quantity affects the ressure at the terminals. of'the 75 and-the secondaries currents of constant 'po- "condenser The action of the condenser tential. I have found that b the use of cona pears to be that of a negative inductance densers, preferabl of the e ectrolytic type, connected with one of the circuits of.a-.transformer I am enabled to so regulate thesecondary current 'in relation to the primary current and the resultant magnetization-of n the core of. the converter that thedesired regulation of the converter is accomplisheddirection for the greater rt of 'aperiod of I thatis, on a decrease of load on the second alternation, and this enabiegthe transformers 85 ary circuit by means of these 1 regulating ina series arrangement to regulate in a'right devices the respective currents and the re.- way," and .it. so varies the time phase of the sultant magnetization of the core of .the secondary in relation to the primary and so transformer are so affected as to decrease in afiec'ts the variations of'the'respective time proper ratio the number of lines'of force. phaseastovarythefself-inductionofthe-sec: 90 which .thread through. the core ofthe con-' ondary, and consequently the 'primai'y'cuk verter, thereby diminishing the total mag rents, in ap roximately direct "ratiov to' the netization 'of the core and decreasing the' variations of load' on the secondary"circuits. pressure at the 'terminals'of the primary cir- .By this s mple, and inexpensive means- 40 cuit and-the inductive resistance of the prinamely, aphase-adv'ancing device; connected 95 mary circuit. This regulates the transtothe secondary c-ircuit amenabled to arformers in the desired .direction. The conran e transformers in series having-devices densers accomplish the desired regulation, in t eir secondaries connected in multiple and hence the condensers alone or the conarc. The many advantages" arising from densers with other-means may be used, and I this arrangement are obvious. Among oth- 100 by a proper roportion of the parts used I ers may be mentioned the possibility of arcan practica y accomplish the wished-for ranging constant-current andconstant-poregulation. a tential devices on the same circuit, theavoid- The figure is a diagrammatic sketch of a ance of large main line-wires, the absence of system containing my improvements. the necessity of using feedermains. thus 105 Referring to the drawing, G is an alternat- .avoidin much complication and expense. ing generator. AB is a line-circuit extending In 0 er that I may have means by which from said generator. I can readily'adjust the time phases of the L L are arc-lamps or other translating derespective currents, I. have the platesof my 5 5 vices arrangedin series in the circuit A B. condensers so arranged in their supports I I 0 't at'is, the action of the condenserap ears to be the o posite to'the action of ass f-induction coil, or at least the action of the 'condenser appearstobe to so the time phases of the primary and seconda i of the transformer-Pas to cause-them to in the same 

